DE102006054697B4 - Device with reinforcing element and / or deflecting device for sound amplification and / or deflection - Google Patents

Abstract

Instrument cluster (1) for a vehicle with an acoustic signal generator (I), a display element and a housing (N), wherein the display element an optical signal and the acoustic signal generator (I) generate an acoustic signal, characterized in that the instrument cluster (1 ) has a mechanical reinforcing element (M), which causes an acoustic sound amplification, so that the sound level at the ear of the driver is steigerbar, wherein the instrument cluster (1) has a deflection device (L, L '), the sound of the acoustic signal transmitter ( I), wherein the housing (N) has a first end portion (2) and a second end portion (3) and the acoustic signal transmitter (I) emits sound in the direction of the second end portion (3), wherein the sound through the deflection device (L , L ') within the housing (N) to the first end portion (2) is deflectable, wherein the acoustic signal transmitter (I) on a component (10) is mounted, wherein the component (10) Schallaust the acoustic signal transmitter (I) having a lining with holes at the first and at the second end, wherein the first end portion (2) of the housing facing the interior of the vehicle and wherein the second end portion (3) of the housing on the side facing away from the interior of the vehicle side of the housing is arranged.

Description

The invention relates to a device for a vehicle with an acoustic signal transmitter, a display element and a housing, wherein the display element generate an optical signal and the acoustic signal generator an acoustic signal.

Such devices are well known - so for example from the publications DE 2 448 894 A1 . AT 288 890 . DE 2 000 415 A1 . DE 10 246 585 A1 . DE 29 619 858 U1 . DE 199 47 506 A1 . DE 199 57 9025 A1 , or US 3 276 538 A - And are usually used for example as a combination instrument in vehicles. A disadvantage of the devices used to date, however, is that the acoustic signal transmitter is mounted for structural reasons in the device that it emits sound away from a driver. However, according to the EURO NCAP standard for car manufacturers, for example, a minimum sound level is required at the driver's ear. Devices which have a structure just described, this standard usually not or only with a correspondingly high-quality acoustic signal generator.

It was therefore an object of the present invention to provide a device in which the sound level at the ear of the driver can be increased without the need for higher quality, especially more powerful, acoustic signal generator must be used.

The object is achieved with a device for a vehicle having an acoustic signal transmitter, a display element and a housing, wherein the display element generates an optical signal and the acoustic signal generator an acoustic signal, the device having a mechanical amplifier element which causes an acoustic sound amplification. According to the invention, the device has a deflection device with which the sound of the acoustic signal transmitter is deflected. By a mechanical reinforcing element, it is advantageously possible to amplify the radiated sound of the acoustic signal transmitter so that the ear of the driver a higher sound level is perceptible and measurable as would be measurable without this mechanical measure. The use of acoustic signal generators, which are more powerful and high quality, thus eliminating. Furthermore, it can be advantageously determined by the choice of the amplification element which frequency ranges of the emitted sound spectrum are amplified and which are to be suppressed. Thus, the perception of the sound can be particularly advantageous adapted to the benefit of the user. Especially when considering frequency ranges that are particularly noticeable to human hearing, amplification of these frequency ranges can change the sound impression. By a deflection device, it is advantageously possible to place the acoustic signal generator without high sound losses arbitrarily in the device. The placement of the acoustic signal transmitter is substantially independent of the location of the sound leakage in the device, since the deflection device can deflect the sound to any sound exit points of the devices. A deflecting device should be any further device which serves to at least partially change or influence the direction of sound waves. In this case, the deflecting device can be connected directly to the acoustic signal transmitter, to the reinforcing element or to the housing of the device in a positive and / or non-positive and / or cohesive manner.

An acoustic signal transmitter should preferably be understood to mean a loudspeaker, with the casing substantially completely surrounding the loudspeaker or only partially surrounding it and having two ends. The second end of the lining is preferably substantially closed, whereas the first end preferably has openings. In this case, sound emerges substantially only from the first end with openings from the fairing. The loudspeaker consists of at least one membrane and an electrical and / or electronic component, wherein it optionally also has a baffle. Through the baffle, a superposition of sound waves that arise in front of the membrane and of sound waves that arise behind the membrane is reduced. According to the invention, both ends of the panel openings, so that the sound can escape from both ends of the panel.

Particularly preferably, the mechanical reinforcing element enters into a sound-transmitting connection with the acoustic signal transmitter. The connection is preferably cohesively and / or positively and / or non-positively. Due to the sound-transmitting connection, the sound transmission from the acoustic signal transmitter to the amplifying element is possible in a particularly effective manner since essentially all the emitted sound waves are absorbed by the amplifying element.

Furthermore, according to the invention, the housing of the device has a first end region and a second end region, wherein the acoustic signal generator emits sound in the direction of the second end region and a deflection device deflects the sound within the housing to the first end region. According to the invention, the first end portion of the housing faces the interior of the vehicle and the second end portion of the housing is that of the interior of the vehicle arranged away from the housing. The second end region is preferably substantially opposite the first end region. A deflection of the sound in the direction of the first end region is a deflection of the sound in the direction of the vehicle driver. The deflection of the sound can be carried out preferably by reflection or sound conduction, wherein a sound guide, for example, is present when a horn or pipe absorb and direct the sound. A sound guide is to be understood when the propagation direction or sound of the sound is substantially changed or when the sound is prevented from propagating in different directions. In a sound guide the sound waves should preferably have substantially all the same propagation direction after the deflection. By deflecting the sound level at the ear of the driver is significantly increased because, for example, multiple reflection of the sound absorbing material of the housing and / or the installation is avoided. By simple or multiple reflections of the sound to absorbing housing parts, the sound propagation direction is changed even without deflecting, with a small amount of sound also passes in the direction of the first end. The change in the sound propagation direction is effected by non-directional reflections of the sound on the housing wall or on housing parts. Under a non-directional reflection is to be understood when the sound propagates after reflection in any propagation directions. The sound component which reaches the first end region in a non-directional reflection has been randomly reflected in the direction of the first end region. A directed reflection is to be understood when, according to the law of reflection, sound is reflected in the direction of the first end, wherein the reflection preferably takes place on surfaces or planes which have a high degree of reflection and a low degree of absorption. The sound waves preferably run parallel to one another after a directed reflection. By a directed reflection is advantageously avoided that the sound is reflected multiple times within the device to the housing. As absorption occurs at each reflection, a reduction of the sound level due to absorption at the housing is reduced. In a directed reflection, it is also possible to pass the sound to objects in the device. An unwanted reflection or a hindered propagation of the sound at such objects is thus advantageously avoided. Objects here are, for example, printed circuit boards or light reflectors which are located in the device.

It is also preferred if the acoustic signal generator emits sound in the direction of the first end region. In this case, preferably the sound is radiated substantially directly in the direction of the vehicle driver, wherein here also preferably a sound amplification and / or a sound reduction by the mechanical reinforcing element and / or the deflection device takes place.

Further preferably, the housing has the deflection device at the second end region or the second end region of the housing is formed directly as a deflection device. It is also preferred if the deflection device extends partially outside the device. The connection between the second end region and the deflection connection is preferably positive and / or non-positive and / or material fit. For example, a positive and / or non-positive connection is achieved by adhesive seams or jamming between the second end region and the deflection device. If the second end region is designed directly as a deflection device, a substantially directed sound deflection takes place directly at the second end region. For this purpose, the second end region, for example, consist of a highly reflective material. An additional component for sound deflection is thereby avoided in the device. A deflecting device extending partly outside the housing is, for example, a tube which is fastened to the housing from the outside. However, it is also conceivable that the deflection device extends substantially completely outside of the housing. For example, a pipe may direct the sound outside the housing to an outlet opening, wherein the outlet opening is preferably outside the housing. In an advantageous manner, it is thus possible to use existing outlet openings, for example ventilation openings in the console, in a vehicle. In this case, the device need not have any outlet openings visible to the occupant and is therefore freer in the manufacturing design.

The deflection device is particularly preferably a parabolic shell and / or an offset parabolic shell and / or a concave shell and / or a tube. However, the deflection device is preferably only part of a shell just described. A part of a parabolic dish or an offset parabolic dish or a concave dish should be understood when substantially not the entire shell is present, but only portions of a shell. By the deflection device in the embodiments just described, it is advantageously possible to reflect the sound directed. Depending on the focal length and the focal point of the deflection device, the reflection direction can be calculated. When using an offset parabolic dish also an offset of the reflection direction is possible, so that the entrance angle and the exit angle of the sound does not seem to be equal. Advantageously, the sound is so also to large objects of the device or steerable to outlet openings of the device. Preferably, the acoustic signal transmitter is located in the focal plane of the deflection device. As a result, the reflected sound waves after reflection substantially parallel to each other.

Further preferably, the deflection device is designed as a paraboloid, wherein in this case a sound guide is possible.

It is also conceivable that the device has more than one deflection device. In this case, the deflecting devices can be designed differently, for example, and consist for example of an offset parabolic mirror and a concave sound. The deflecting devices can redirect the sound from different acoustic signal transmitters or from an acoustic signal generator.

Particularly preferably, the reinforcing element is a shortened conical horn and / or an exponential horn and / or a conical horn and / or a shortened exponential horn and / or a tube of any cross section. On the operation of the just enumerated reinforcing elements will not be discussed further, as they are used for example in discotheques and their operation is therefore known. The use of shortened horns is useful in a device for a vehicle, as shortened horns take up less space and the device thus has a small overall length. Particularly preferably, a portion of the housing is formed as a horn or pipe, so that no additional component must be installed in the device. However, it is also conceivable that the cladding of the acoustic signal transmitter is designed as a reinforcing element. In a tube of any cross-section, for example, pipes with a rectangular, triangular or even round cross section meant. The geometry of the tube is essentially dependent on the type of sound amplification. Further preferably, the device comprises reinforcing element or the reinforcing element is positively and / or positively and / or materially connected to the housing of the device. In the latter case, the reinforcing element may preferably be connected outside the housing of the device to the housing.

Particularly preferably, the tube is a combination of Basreflex and Transmissionline or the tube is a bass reflex housing or a Transmissionline tube. Due to the different embodiment of the tube, it is advantageously possible to particularly enhance different frequencies. For example, a bass reflex enclosure preferably amplifies low frequencies, the gain being dependent, inter alia, on the shape of the reflex tube and the housing volume. Depending on the amplifier element, it is advantageously possible to amplify selected frequencies and to attenuate other frequencies. The choice of the acoustic signal generator, which is built into the device is thus not limited to what frequency he generates as loud. There is thus a wider choice of acoustic signalers for installation in the device.

Further preferably, the tube is a combination of bass reflex and Helmholzresonator, which also advantageous certain frequencies can be amplified.

According to the invention, the acoustic signal transmitter is mounted on a component, wherein the component has sound outlet openings. Under mount should preferably a positive and / or positive and / or material connection between the component and the acoustic signal are understood. The contact can be done for example by gluing, soldering or clamping. Under sound outlet openings in the component should be understood at least one, preferably a plurality of holes or gaps in the component through which sound can pass. The acoustic signal generator is preferably mounted on the component such that its first end points in the direction of the second end region of the housing. According to the invention, the acoustic signal transmitter in this case on a panel with holes at the first and at the second end. Thus, advantageously both the sound in front of the membrane and the sound behind the membrane comes out of the cladding. Through the holes in the second end of the panel, the sound emitted in the direction of the first end region emerges from the panel and through the sound outlet openings of the component. This proportion of sound thus propagates in the direction of the first end region. The sound component which is emitted in the direction of the second end region of the device is preferably deflected by a deflection device in the direction of the first end region. This sound component can also pass through further sound outlet openings of the component and is thus prevented from propagating in the direction of the first end region by the component. By using both sound components, the measurable sound level in the first end region is advantageously increased. Particularly preferably, the component is a printed circuit board. It is also conceivable that both sound components are amplified by means of a reinforcing element and / or deflected by means of a deflection device. Furthermore, it is conceivable that the sound is conducted past the circuit board.

Furthermore, the component preferably only has parts of the acoustic signal transmitter, the component also having sound outlet openings in this case. Preferably, the parts are the membrane and / or the electrical and / or electronic Component and / or the baffle. A cladding is therefore no longer needed. The membrane of the loudspeaker is preferably in a sound-transmitting connection with the baffle. Again, both the sound in front of the membrane and the sound behind the membrane is used. The propagation of both sound components is essentially as described in the paragraph above. Again, the sound level in the first end of the panel is advantageously increased. In a particular embodiment is located between the baffle of the speaker and the component a seal. Preferably, the sound generated by the membrane is amplified or deflected by a reinforcing element and / or a deflection device. For this purpose, for example, a reinforcing element can be sound transmitting in conjunction with the membrane.

According to the invention, the device is a combination instrument of a vehicle. In particular, in a combination instrument a sound deflection by a deflection device is particularly advantageous because the sound due to the different devices or components can hardly spread unhindered.

A further subject of the present invention is a method for sound emission for a device in a vehicle, wherein a mechanical reinforcing element and / or a deflection device amplify and / or deflect the sound, wherein in the case of a deflection the sound after its emission in the direction of the first end region of the housing is directed. Advantageously, in this case the sound is amplified and / or steerable, so that the sound level can be increased.

The invention will be explained with reference to figures, wherein the explanations are merely exemplary and do not limit the general inventive concept.

1 schematically represents a device with an acoustic signal transmitter.

2 schematically represents another view of the device.

3 schematically represents an embodiment of the acoustic signal transmitter.

4 schematically represents an acoustic signal generator on a component.

5 schematically illustrates parts of the acoustic signal transmitter with a baffle and the component.

6 schematically represents a reinforcing element with acoustic signal transmitter and a sound guide.

In the 1 is schematically the device 1 shown, with the view towards the first end 2 is shown. An acoustic signal generator I is installed in a housing N such that it emits sound in the direction of the second end region 3 radiates. The acoustic signal generator I is in the exemplary embodiment in contact with a sound guide K, the sound parallel to the second end portion 3 leads. The sound guide K thus assumes a steering of the sound and is consequently also to be understood as a deflection device L '. Furthermore, a part of a gain element M is shown, wherein in the exemplary embodiment, the reinforcing element M is an expontential horn. By means of the amplifying element M, the sound of the acoustic signal generator I is amplified. At outlet openings 4 of the housing N, the sound of the acoustic signal generator I in the direction of the first end portion 2 escape.

In the 2 is the second end area 3 the device 1 is shown. The first end area 2 and the second end area 3 are essentially opposite each other. A driver sees when he sits in the direction of travel on the first end 2 the device 1 , Another deflection device L causes the sound in the direction of the first end portion 2 is deflected and then towards the first end 2 spreads.

In the 3 schematically an embodiment of an acoustic signal generator I is shown. The acoustic signal transmitter I has a fairing 5 on, which is a first end 6 and a second end 7 Has. In the embodiment has the first end 6 Holes through which the sound can escape. The second end 7 has in the embodiment outlets 9 on. In the exemplary embodiment, sound therefore emerges both from the first end 6 as well as from the second end 7 the disguise 5 of the acoustic signal transmitter I off.

In the 4 is the acoustic signal generator I with a component 10 shown. The component 10 has one or more sound outlet openings 11 on, in the embodiment, only one sound outlet 11 is shown for the sake of clarity. The acoustic signal generator 1 is with a fastener 12 on the component 10 attached. The second end 7 the disguise 5 of the acoustic signal generator I has a hole in the embodiment, so that sound in the direction of the component 10 can escape. This sound can then pass through the sound outlet openings 11 pass through. The acoustic signal generator I shows it with its first end 6 in the direction of the second end region 3 the device 1 , Sound to the component 10 can be broadcast here directly through the sound outlet openings 11 in the direction of the first end region 2 the device 1 reach. The sound coming towards the second end 3 the device 1 is radiated, for example, by a deflection L, for example, a parabolic shell, in the direction of the first end portion 2 the device 1 be redirected. Through additional sound outlet openings 11 ' of the component 10 then can this deflected sound the component 10 pass or be steered past it and move towards the first end area 2 spread. Advantageously, therefore, the sound is not through the component 10 at a propagation in the direction of the first end region 2 prevented. The component 10 is preferably a printed circuit board.

In the 5 are schematic parts of the acoustic signal generator I and the component 10 shown. The component 10 also has sound outlet openings in this embodiment 11 on, through which the sound can pass. The sound outlet openings 11 are preferably under a baffle 13 and are therefore shown in dashed lines. As parts of the acoustic signal transmitter in the embodiment, a baffle 13 and a membrane 14 shown. Here is the baffle 13 with the fastener 12 on the component 10 attached. The membrane 14 is in the baffle 13 admitted. The membrane 14 can move in the direction of the component 10 and of the component 10 swing away. Through the sound outlet openings 11 In this case, the sound that is in the direction of the component 10 is broadcast, directly through the sound outlet openings 11 kick and move towards the first end area 2 the device 1 spread. The sound of the component 10 away can be broadcast towards the first end 2 the device 1 be redirected and also through other sound outlet openings 11 of the component 10 occur or on the component 10 be passed and so the first end 2 the device 1 to reach. It is also conceivable that between the baffle 13 and the component 10 a sealing element is located. This prevents sound from moving in the direction of the component 10 is emitted by reflection on the component 10 in the direction of the second end region 3 spreads. A superposition of sound waves in the direction of the component 10 be radiated and then towards the second end region 3 be reflected and sound towards the second end 3 is emitted, is therefore avoided. Thus, a destructive interference of these sound waves is avoided with each other, so that there is essentially no extinction of sound waves. The risk of an acoustic short circuit is consequently reduced.

In the 6 schematically a reinforcing element M is shown. The acoustic signal generator I is introduced, for example, in a tube M. As a result, the sound generated by the acoustic signal generator I is amplified: The reinforcing element M consists of a transmission line E and a Basreflexgehäuse F. Through the opening, which includes the bass reflex tube B, emitted in the direction C sound of the acoustic signal generator I is also available and reinforced.

LIST OF REFERENCE NUMBERS

1

contraption

2

first end area

3

second end area

4

outlet

5

paneling

6

first end

7

second end

8th

speaker

9

outlets

10

component

11

Sound outlet

11 '

further sound outlet

12

fastener

13

baffle

14

membrane

I

acoustic signal generator

C

direction

e

Transmission Line

L

deflecting

L '

deflecting

M

Verstärkelement

N

casing

B

Bass reflex tube

F

Bass reflex housing

Claims (10)

Instrument cluster ( 1 ) for a vehicle having an acoustic signal generator (I), a display element and a housing (N), wherein the display element generates an optical signal and the acoustic signal generator (I) an acoustic signal, characterized in that the instrument cluster ( 1 ) has a mechanical reinforcing element (M), which causes an acoustic sound amplification, so that the sound level at the ear of the driver can be increased, wherein the instrument cluster ( 1 ) has a deflection device (L, L '), which deflects the sound of the acoustic signal transmitter (I), wherein the housing (N) has a first end region ( 2 ) and a second end region ( 3 ) and the acoustic signal generator (I) sound in the direction of the second end region ( 3 ), wherein the sound through the deflection device (L, L ') within the housing (N) to the first end region ( 2 ) is deflectable, wherein the acoustic signal transmitter (I) on a component ( 10 ) is mounted, wherein the component ( 10 ) Sound outlet openings ( 11 ), wherein the acoustic signal transmitter (I) a panel with holes on the first and at the second end, wherein the first end region ( 2 ) of the housing to the interior of the vehicle and wherein the second end region ( 3 ) of the housing is arranged on the side facing away from the interior of the vehicle side of the housing. Instrument cluster ( 1 ) according to claim 1, characterized in that the mechanical reinforcing element (M) with the acoustic signal transmitter (I) enters into a sound-transmitting connection. Instrument cluster according to one of the preceding claims, characterized in that the housing (N) at the second end region ( 3 ) has the deflection device (L, L ') or the second end region ( 3 ) is formed directly as a deflection device (L, L ') or the deflection device (L, L') partially outside the instrument cluster ( 1 ) runs. Instrument cluster ( 1 ) according to one of the preceding claims, characterized in that the deflection device (L, L ') a parabolic shell and / or part of a parabolic shell and / or an offset parabolic shell and / or a part of an offset parabolic shell and / or a concave shell and / or a part of a concave shell and / or a pipe. Instrument cluster ( 1 ) according to one of the preceding claims, characterized in that the deflection device (L, L ') is a paraboloid. Instrument cluster ( 1 ) according to one of the preceding claims, characterized in that the reinforcing element (M) is a shortened conical horn and / or a conical horn and / or an exponential horn and / or a shortened exponential horn and / or a tube of any cross-section. Instrument cluster ( 1 ) according to one of the preceding claims, characterized in that the tube is a combination of bass reflex and transmission line or the tube is a bass reflex housing (F) or the tube is a transmission line (E). Instrument cluster ( 1 ) according to one of the preceding claims, characterized in that the tube is a combination of bass reflex and Helmholzresonator. Instrument cluster ( 1 ) according to one of the preceding claims, characterized in that the component ( 10 ) Comprises parts of the acoustic signal generator (I) and the component ( 10 ) Sound outlet openings ( 11 ) having. Method for emitting sound for an instrument cluster ( 1 ) of a vehicle according to one of the preceding claims, characterized in that the sound after its emission by a mechanical amplifier element (M) and / or a deflection device (L, L ') is amplified and / or deflected, wherein in the case of a deflection of the sound towards the first end region ( 2 ) of the housing (N) is directed.

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